A remarkable species, it is the biggest and most finely cut in the genus Arachniodes. It is also, in this genus, the hardiest and the easiest to cultivate. The imprints of ribs and sori are visible on the superior face of the blade, hence the name of 'upside down fern '. Its rhizome is creeping. Its semi-evergreen fronds are horizontal. To cultivate in moist and humusy soil in light shade. Height : 50/60cm. Width : 80/100cm. Hardiness : -25°C.